Open Google Chrome and access the action menu in the top-right corner. Then, go to More tools and choose Extensions. Next, use the toggle associated to each extension to disable it. With all extensions disabled, restart Google Chrome and see if the odd behavior is fixed.
Why does my Chrome Open twice?
This issue can occur when the incorrect user profile has been corrupted or removed from the Google Chrome™ browser settings.
How do I stop my browser from opening multiple windows?
Another way of preventing Chrome Browser from running Multiple Processes on your Computer is to simply use fewer Tabs, Extensions and Plugins. Delete all the unnecessary Plugins and Extensions and avoid opening multiple tabs. Instead of opening multiple tabs, you can get used to bookmarking web pages on your computer.